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Principles of Iteration

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Presentation about how GitLab builds its product. Given at Cloud Expo London 2018

Publicada em: Tecnologia
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Principles of Iteration

  1. 1. Job van der Voort - @Jobvo Principles of Iteration @Jobvo
  2. 2. GitLab @Jobvo
  3. 3. First commit Oct 9, 2011 Inc. established in 2014 @Jobvo - about.gitlab.com/history
  4. 4. GitLab Inc. is why I'm here today @Jobvo
  5. 5. 253 employees >67 pets @Jobvo - about.gitlab.com/team/
  6. 6. Zero offices ~36 different countries @Jobvo - about.gitlab.com/team/
  7. 7. (Almost) everything is open @Jobvo - about.gitlab.com/handbook
  8. 8. Extremely iterative @Jobvo
  9. 9. Why you should listen to me @Jobvo
  10. 10. Q3 2015 First version of GitLab CI @Jobvo
  11. 11. Q3 2017 GitLab CI Leader in Forrester Wave CI Tools @Jobvo
  12. 12. @Jobvo
  13. 13. PRINCIPLES OF ITERATION @Jobvo
  14. 14. Focus on customer value @Jobvo
  15. 15. Focus on customer value Consistently build cool things that people like @Jobvo
  16. 16. Only possible to do consistently by iteration @Jobvo
  17. 17. First principle SHORTEN YOUR CYCLE @Jobvo
  18. 18. @Jobvo
  19. 19. Cycle time Time it takes to go from writing down an idea to shipping that change in production @Jobvo - 1: Shorten your cycle
  20. 20. Shorter cycles |> More iterative @Jobvo - 1: Shorten your cycle
  21. 21. Skate to where the puck is going to be @Jobvo - 1: Shorten your cycle
  22. 22. Skate to where the puck is going to be @Jobvo - 1: Shorten your cycle
  23. 23. How? @Jobvo - 1: Shorten your cycle
  24. 24. 1. Shorter cycles Minimally Viable Change (MVC) @Jobvo - 1: Shorten your cycle
  25. 25. 1. Shorter cycles Deploy frequently (Continuously) @Jobvo - 1: Shorten your cycle
  26. 26. 1. Shorter cycles Deploy more when it hurts @Jobvo - 1: Shorten your cycle
  27. 27. 1. Shorter cycles Include gatekeepers into each step of the cycle @Jobvo - 1: Shorten your cycle
  28. 28. 1. Shorter cycles Automate everything 1. Have a great test suite (aim for 85% coverage) 2. Automatically deploy on merge to staging / preprod / prod 3. Automatic roll-out and roll-back 4. Adopting Cloud Native (Kubernetes + GitLab) makes this all 100x easier @Jobvo - 1: Shorten your cycle
  29. 29. 1. Shorter cycles 1. Adopt MVC 2. Deploy frequently 3. Deploy more when it hurts 4. Include gatekeepers into the conversation 5. Automate everything @Jobvo - 1: Shorten your cycle
  30. 30. 1. Shorter cycles Result: • Easier to coordinate, reason, estimate • Quicker to respond to market needs • Higher predictability • Better code quality • Easier to troubleshoot @Jobvo - 1: Shorten your cycle
  31. 31. Second principle ADOPT CONVERSATIONAL DEVELOPMENT @Jobvo
  32. 32. Conversational Development (ConvDev) Asynchronous, result-driven way of communicating @Jobvo - 2: Adopt ConvDev
  33. 33. ConvDev is why GitLab can exist @Jobvo - 2: Adopt ConvDev
  34. 34. 2. ConvDev Write everything down @Jobvo - 2: Adopt ConvDev
  35. 35. 2. ConvDev Thread the conversation through all stages @Jobvo - 2: Adopt ConvDev
  36. 36. 2. ConvDev Thread the conversation through all stages @Jobvo - 2: Adopt ConvDev
  37. 37. 2. ConvDev Asynchronous communication without need for consensus @Jobvo - 2: Adopt ConvDev
  38. 38. 2. ConvDev 1. Write everything down 2. Thread the conversation through all stages 3. Async without consensus @Jobvo - 2: Adopt ConvDev
  39. 39. 2. ConvDev Results • Everyone can always move forward with their work • Higher efficiency • Every change and decision is written down and visible • Can track cycle time @Jobvo - 2: Adopt ConvDev
  40. 40. Short cycle times + ConvDev = Awesome @Jobvo
  41. 41. Small changes that are easily revertable / rolled back @Jobvo
  42. 42. There is a clear audit trail for each and every change @Jobvo
  43. 43. Everyone looks at the same things @Jobvo
  44. 44. Third principle MEASURE AND LEARN @Jobvo
  45. 45. Connecting business with change @Jobvo - 3: Measure and learn
  46. 46. See how any change affects (business) metrics in the same place (You can do this today in GitLab) @Jobvo - 3: Measure and learn
  47. 47. SUMMARY TIME @Jobvo
  48. 48. 1. Shorten your cycles @Jobvo
  49. 49. 2. Adopt ConvDev (async communication) @Jobvo
  50. 50. 3. Measure and learn @Jobvo
  51. 51. Questions?@Jobvo / job@gitlab.com RemoteWorkPodcast.com GitLab 10.6 out tomorrow! @Jobvo

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